High Speed Direct Drive Centrifugal Downblast Exhaust Fan with speed control, birdscreen, disconnect switch and 9" wheel 19" x 19" Fan Base Dimension/ 39 LBs/ 300 CFM/ 0.060 HP 115 volt Single Phase Motor Ideal for installation in hospitals, schools, hotels, auditoriums, office buildings and light industrial areas. Designed to pull more air under higher static pressures. The efficient, balanced wheel and air inlet design contribute to maintaining low noise levels and extended motor life As all fans are custom built, no returns or exchanges are accepted.